What is a frequent disadvantage of reactive maintenance compared to routine maintenance?

Reactive maintenance often leads to higher unpredictability because it is typically performed in response to sudden failures or issues, rather than on a scheduled basis. This unpredictability can complicate planning and resource allocation, making it difficult for teams to manage workloads effectively or prepare for upcoming maintenance needs. Unlike routine maintenance, which is scheduled and can be anticipated, reactive maintenance can arise at any moment, often resulting in emergency repairs that disrupt workflows and lead to unforeseen expenses. This lack of predictability can also result in stretched resources and increased downtime, further complicating the maintenance process and potentially leading to a less efficient operation overall.